1 Public Health and Infection Group of Research, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia; Department of Pathology and Laboratory Medicine, Hospital Internacional, Barquisimeto, Venezuela and the Laboratory of Biochemistry, Instituto de Biomedicina, Caracas, Venezuela. Electronic address: arodriguezm@utp.edu.co.
2 Public Health and Infection Group of Research, Faculty of Health Sciences, Universidad Tecnológica de Pereira, Pereira, Risaralda, Colombia; Department of Pathology and Laboratory Medicine, Hospital Internacional, Barquisimeto, Venezuela and the Laboratory of Biochemistry, Instituto de Biomedicina, Caracas, Venezuela.